#region Apache License
//
// Licensed to the Apache Software Foundation (ASF) under one or more 
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership. 
// The ASF licenses this file to you under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with 
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion

using System;
using System.Globalization;

using log4net.Core;
using log4net.Util;

namespace log4net.Ext.Trace
{
    public class TraceLogImpl : LogImpl, ITraceLog
    {
        /// <summary>
        /// The fully qualified name of this declaring type not the type of any subclass.
        /// </summary>
        private readonly static Type ThisDeclaringType = typeof(TraceLogImpl);

        /// <summary>
        /// The default value for the TRACE level
        /// </summary>
        private readonly static Level s_defaultLevelTrace = new Level(20000, "TRACE");

        /// <summary>
        /// The current value for the TRACE level
        /// </summary>
        private Level m_levelTrace;


        public TraceLogImpl(ILogger logger)
            : base(logger)
        {
        }

        /// <summary>
        /// Lookup the current value of the TRACE level
        /// </summary>
        protected override void ReloadLevels(log4net.Repository.ILoggerRepository repository)
        {
            base.ReloadLevels(repository);

            m_levelTrace = repository.LevelMap.LookupWithDefault(s_defaultLevelTrace);
        }

        #region Implementation of ITraceLog

        public void Trace(object message)
        {
            Logger.Log(ThisDeclaringType, m_levelTrace, message, null);
        }

        public void Trace(object message, System.Exception t)
        {
            Logger.Log(ThisDeclaringType, m_levelTrace, message, t);
        }

        public void TraceFormat(string format, params object[] args)
        {
            if (IsTraceEnabled) {
                Logger.Log(ThisDeclaringType, m_levelTrace, new SystemStringFormat(CultureInfo.InvariantCulture, format, args), null);
            }
        }

        public void TraceFormat(IFormatProvider provider, string format, params object[] args)
        {
            if (IsTraceEnabled) {
                Logger.Log(ThisDeclaringType, m_levelTrace, new SystemStringFormat(provider, format, args), null);
            }
        }

        public bool IsTraceEnabled
        {
            get { return Logger.IsEnabledFor(m_levelTrace); }
        }

        #endregion Implementation of ITraceLog
    }
}

